Solve the system of equations.
+ 
= 0
A. ?
B. {(-2, -5})
C. 
D. {(-2, 5})
Answer: D
Mathematics
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Simplify the radical. Assume that all variables represent positive real numbers.
A. x2
B. x2
C. x
D. x2
Mathematics
Solve for x.9x = 1
A. x = 1
B. x = 
C. x = 0
D. ?
Mathematics
Find an equation for the ellipse.Center at (0, 0); focus at (-3, 0); vertex at (7, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the exact value of 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics